雙語閱讀：尋找物種起源
There’s a cool new Web site—and iPhone app—that could come in handy in a wide variety of circumstances. It’s called Time Tree. And it tells you how closely related any two organisms are over time. In other words, it’ll tell you what the available data say is the time since any two organisms shared a common ancestor. Time Tree is jointly run by Penn State’s Blair Hedges and Arizona State’s Sudhir Kumar.
有一個(gè)非�？岬男戮W(wǎng)站，它和iPhone 應(yīng)用程序一樣，能在多個(gè)領(lǐng)域里大顯身手。這個(gè)網(wǎng)站叫做“時(shí)光之樹”。它會(huì)告訴你任意兩種生物在時(shí)間長河里的親密程度。換句話說，它會(huì)根據(jù)現(xiàn)有數(shù)據(jù)告訴你，這兩種生物在多少年前有同一個(gè)祖先。時(shí)光之樹由賓夕法尼亞州立大學(xué)的布萊爾·赫奇斯和亞利桑那州立大學(xué)的蘇希爾·庫馬爾共同運(yùn)行。
So let’s say you’re out for a walk in the woods, with your iPhone handy, and you run into a grizzly bear. You quickly load the app and key in the two organisms you’re interested in. Those would be you, a human, and grizzly bear, the thing that’s approaching you alarmingly fast. In just a couple of seconds, you are informed that you and the grizzly bear shared a common ancestor just 98.2 million years ago.
假如說你在森林中散步，手中拿著一部iPhone，迎頭撞上了一頭灰熊。你迅速運(yùn)行iPhone程序，輸入兩種你感興趣的生物。那就是你，一個(gè)人類，以及一頭灰熊——它正在以驚人的'速度向你奔來。在兩秒鐘之后，你就會(huì)被告知這頭熊和你在九千八百二十萬年前有著同一個(gè)祖先。
If you have a computer and are just curious about the grizzly bear, go to timetree.org. The results average the findings of published papers relevant to your search and include links to the papers.
如果你有一臺(tái)計(jì)算機(jī)，而且對灰熊感興趣，就登上timetree.org這個(gè)網(wǎng)頁吧。測試結(jié)果會(huì)給出從相關(guān)論文中找到的平均數(shù)據(jù)，并給出這些論文的鏈接。
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